
What is Depreciation? How It Is Calculated?
As a business owner, you invest in machinery, company vehicles, and even office equipment to run your business. With time, these assets start to lose their value. Machines wear out, technology becomes outdated, and vehicles accumulate miles. This gradual loss of value of assets over time is called depreciation. Depreciation is the process of distributing the cost of an asset (something expensive you buy for your business) over several years. Instead of deducting the full cost of the asset in the year it was purchased, you spread out the expense over the years, so that the financials depict the correct picture for the given period and are compliant with various Accounting standards. Depreciation helps business owners reduce their taxable income and save on taxes. The number of years you can depreciate an item depends on how long it’s expected to be useful. For example, a laptop usually lasts about five years. Similarly, other assets, like machinery or office furniture, have their own specific useful life spans, which determine how depreciation is calculated. For example: Let’s say you buy a delivery van for $30,000, and you expect to use it for five years. Instead of recording the entire $30,000 as an expense and capitalizing it in the year of purchase, you would spread it out over the five years, reflecting the van’s declining value. Why is Depreciation Important? It helps in Accurate Financial Reporting: Depreciation ensures your books reflect the true value of your assets over time. Depreciation Provides Tax Benefits: Depreciation is treated as an expense, reducing your taxable income and helping you save on taxes. It Helps in Better Decision-Making: By tracking asset value, businesses can more effectively plan for replacements and investments. What Types of Assets Can Be Depreciated? Both tangible and intangible assets can be depreciated. For intangible assets, the process of depreciation is called Amortization. Vehicles, Real estate, Equipment, Office furniture, and Computers are some of the assets that businesses commonly depreciate. Land is a significant exception to this rule because it is a fixed asset that is not subject to depreciation. It is considered a non-depleting asset because it does not become obsolete, wear out, or have a finite useful life. However, to be eligible, an asset must meet the following criteria: You must own the asset. It must be used in your business or to generate income. The useful life of the asset must be measurable. It should have a lifespan of more than one year. However, the amount of asset depreciation on your books (Book Depreciation) can be different from that on your tax return (Tax Depreciation). Book Depreciation Versus Tax Depreciation When managing depreciation for fixed assets, businesses often use different methods for their financial records and tax reporting. These differences exist because financial statements and tax returns serve distinct purposes. Book Depreciation Book depreciation is the depreciation expense that a company records in its general ledger and reports on its profit and loss (P&L) statement for a specific period. It reflects the decline in the value of assets over time. It is considered as a non-cash expense and does not directly affect cash flow. Businesses use book depreciation to provide an accurate representation of their financial performance. Companies often choose a method, such as straight-line depreciation or double-declining balance, that best matches the asset’s actual usage and value reduction. Tax Depreciation Tax depreciation is the method used for reporting on a company’s income tax return. Unlike book depreciation, it must follow depreciation rules set by the Internal Revenue Service (IRS). These rules determine the acceptable methods, asset classes, and useful lives for various types of assets. For tax purposes, a depreciation method, like the Modified Accelerated Cost Recovery System (MACRS), is commonly used. Key Differences Between Book and Tax Depreciation Book Depreciation Tax Depreciation Reflects the true economic value of assets for financial reporting Follows IRS rules to maximize allowable tax deductions Flexible; businesses can choose methods based on their accounting goals. Strictly regulated by the IRS, the mostly used method is MACRS May use longer useful lives to better match asset usage Often allows shorter depreciation periods for faster deductions Non-cash expense; affects financial reports but not immediate tax payments Directly impacts taxable income and cash flow from taxes However, the total depreciation expense over the entire life of an asset should be similar with both methods. Types of Depreciation Different companies use different methods to calculate depreciation – basis the type of asset and their financial goals. While some methods consider depreciation as a function of usage, others are based on the passage of time. The most common ones include: 1. Straight Line Depreciation Method A time-based method, the straight-line method of depreciation is one of the simplest and most commonly used methods to record depreciation. It reports an equal depreciation expense throughout the entire useful life of the asset until the asset reaches its salvage value. It is calculated as: Annual Depreciation = (Cost – Salvage Value) /Estimated Useful Life Cost of Asset: The purchase price of the asset. Salvage Value: Estimated residual value of the asset at the end of its useful life that the business expects to receive when the asset is sold or disposed of after being fully depreciated. Useful Life: How many years the asset is expected to generate cash flows? For example: You have bought a machine for $20,000. The salvage value of the machine is $2,000 and it has a useful life of 10 years. Using the straight-line method: Depreciation Expense = (20,000 − 2,000) = 1,800 per year ———————- 10 2. Declining Balance Method The declining balance method is also known as the reducing balance method. Businesses use to increase the depreciation of an asset in the early years and less in later years. It’s ideal for assets that lose value quickly, like computers, cell phones, and vehicles. It allows companies to save money on taxes by deferring them to later years. The depreciation rate is usually double the straight-line depreciation rate. It is calculated








